Learning resources of "learning OpenFOAM together" in OpenFOAM

OpenFOAM's learning materials are not much, and personal speculation may be related to the type of software.
For commercial software, because to occupy the market, software developers are naturally not allowed to use software, the more the better, because they are selling software, will use more people, software sold the better. Their main economic source is selling software, and software training is usually the service that accompanies the sale of the software. So, the more unofficial training the better, everyone will use, they can even the training can be saved.
But OpenFOAM is different, OpenFOAM is open source, everyone can get the source code of the software, so it is impossible to rely on the sale of software to earn money (of course, there will be openfoam to make money after the development of packaging), so OpenFOAM's main economic source is software training, Don't believe you can go to look at the official website of OpenFOAM, everywhere is full of software training ads, so stand in the developer's perspective, it is natural to hope not to use the software, the more the better, so that the good to earn training fees. So the current openfoam of learning data compared to commercial CFD software, it can be said that is very poor.

But the study always has to continue, the data is small but not not, here summarizes some of the openfoam I find learning materials, if there is more information, welcome message.

• Software Help documentation
  A userguide is included in the OpenFOAM. There was a programe guide in the past, but now it seems to be out of the 4.0 version.
  1> online version of OpenFOAM user documentation
  2>pdf version of OpenFOAM user documentation
  3> Chinese Translation version of the user documentation, Internet station: [Dongyue fluid] Download, version is 3.0

• OpenFOAM network resources
  Some of the sites you can follow, including:
  1>openfoamwiki: A relatively comprehensive website about OpenFOAM, all kinds of official, unofficial information can be found.
  2>cfd Direct: Much of this site is about OpenFOAM training, but it also includes some video tutorials.
  3>bluecape: The official website of the company that produced BLUECFD, there is a part about OpenFOAM information.
  4>cfd-online:cfd-online Forum in the OpenFOAM plate, these years more lively.
  domestic resources are very rare, and few have done well, you can look at:
  1> Su Junwei Blog: Not updated for several years, the latest update is also about the training of ads, not much dry.
  2> Blue Fluid Network: There is a openfoam plate, it seems to be invited to register. Years have not been logged, and now the account password are forgotten, and too lazy to spend money to buy the invitation code and then register, so it is not very clear what is inside something.

• Book Information
  Book materials are scarce and are in English.
  1.The OpenFoam Technology Primer
  2.The finite Volume Method in computational Fluid Dynamics_ a advanced Introduction with OPENFOAM_ and Matlab

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Learning resources of "learning OpenFOAM together" in OpenFOAM